Reversing-valve.



No. 789,791. PATENTED MAY 16, 1905.

" H. A. BOBDEGKBR, JR- REVERSING VALVE.

APPLIOATION FILED DEO.29, 1902.

3 S TS-SHEET 1.

No. 789,791. PATBNTED MAY 16, 1905. H.'A. BOBDEOKBR, JR.

REVBRSING VALVE. I APPLICATION rum) nmze, 19oz.

gamma-SHEET 2.

No. 789,791. PATENTED MAY 16, 1905. H7 A. BOEDEGKBR, JR. REVERSING VALVE.

APPLIOATIGN FILED DEQ.29, 1902.

3 SHEETS-SHEET 3.

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llllll mllllllm h I NITED STATES HENRY A. BOEDEOKER, JR,

Patented. May 16,1905.

OF TIEDTVILLE, ILLlNOIS.

REVERSlNG-VALVE.

SPECIFICATION forming part of Letters Patent No. 7 89,'791, dated May 16, 1905.

7 Application filed December 29, 1902. Qerial No, 136,999.

To all whom, it may concern:

Be it known that I, HENRY A. BOEDEOKER, J r., a citizen of the United States, residing at Tiedtville, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Reversing-Valves, of which the following is afull, clear, and exact description.

My invention relates to an improved reversing-valve for steam-engines, and has special reference to its adaptation to the class of engines known to the trade as automobile-engines; but it is not limited thereto, as it may be applied to any slide-valve engine adapted for reverse motion.

My improvement will be readily understood from the following description, taken in connection with the accompanying drawings, which form part of my specification.

Figure 1 is a longitudinal section of an engine-cylinder and the steam-chest, showing therein the reversing-valve'in position to theleft for running the engine in its forward motion. Fig. 2 is a similar view showing the position of the reversing-valve to the right for running the engine in its backward motion. Figs. 3, 1, and 5 are vertical transverse sections of the cylinder, steam-chest, slide D- valve, and my reversingvalve,but showing the parts of the reversing-valve in different positions. Figs. 6 and7 comprise the upper half of the reversing-valve. Figs. 8 and 9 comprise the lower half of the reversing-valve. Fig. 10 is asectional view on line 1010 of Fig. 8. Fig. 11 is a sectional view on line 11 11 of Fig. 8. Fig. 12 is a sectional view on line 12 12 of Fig. 8. line 13 13 of Fig. 8. Fig. 1 1 is a sectional View on line 14 14. of Fig. 8. Fig. 15 is a sectional view on line 15 15 of Fig. 8. Fig. 16 is a sectional view on line 16 16 of Fig. 7. Fig. 17 is a sectional view on line 17 17 of Fig. 6. Fig. 18 is a sectional view on line 18 18 of Fig. 6-. Fig. 19 is a sectional view on line 19 19 of Fig. 20, slide-valve. Fig. 20 is a plan view of slide-valve; Fig. 21, underneath plan view of slide-valve; Fig. 22, side elevation of same.

Reference being had to the drawings, in which similar letters refer to similar parts,

Fig. 13 is a sectional view on A represents an engine-cylinder provided with the usual steam-ports ac and 5b and exhaust-port f.

Letter l2 represents the piston.

Letter 2 represents the steam-chest, having arranged therein the reversing-valve and a slide D-valve.

Letters 9' and 7 represent the reversingvalve, which is provided with steam-ports a, Z), c, and cl and exhaust-port e, to which is attached a rod 8, used to reverse the engine. This moves between the seats formed on the cylinder and the under side of the seat F, of ordinary construction, known as the D- valve, which is clearly shown in Figs. 1 and 2, provided with valve-rod w, connected to an eccentric on the engine-shaft.

From the foregoing description. reference being had to the drawings, the skilled mechanic will readily understand the construction of my improvement without further description as to the construction.

Fig. 1 is a sectional view of 1 1 of Fig. 3, which shows the engine to be working in the forward motion. It will be observed that the live steam enters steam-pipe ton steam-chest z, in which is attached a plate a, which acts as a distributer of the steam when it comes into the steam-chest. Thereupon it enters steamport a of the reversing valve '1' 9'7, then through ports (m of the cylinder into cylinder 9. The dead steam that has done its work iii cylinder gg will then exhaust through steam-port b?) of the cylinder, then through steam-port b of the reversing-valve r 7), then through the hollow spacel under the D slidevalve 4) out into the exhaust-port e of the reversing-valve 4 7'7, and finally through the exhaust-port f of the cylinder, and vice versa, as in Fig. 2. When the engineer desires to reverse the motion of the engine, he moves a lever which is attached to the stem .9 to the right, thereby moving the reversing-valve, which is shown in Figs. 1 and 2.

Fig. 2 is a sectional view of the reversingvalve in the backward motion. the engine, move the reversing-valve a" 7) to the right by means of a rod 8, which is attached to said valve, so that the steam-ports C and D, as shown in Fig. 8, of the reversing- To reverse IOO valve W, correspond with the steam-ports ad and Z26 of the cylinder. It will be observed that the steam enters at steam-port 0 of the reversing-valve r 9! and travels through canal cc and then through steam-port C, as shown in Fig. 8, then through steam-port b?) of the cylinder into cylinder gg. The steam that has done its work in cylinder g will pass throughsteam-port ad of the cylinder into steam port D, through canal 'dd and up through steam-port d, as shown in Fig. 6, and will then exhaust through the hollow space Z under the slide D-valve 1;. out through exhaust-port e of said reversing-valve r 7? through exhaust-port f of the cylinder.

Fig. 3 is a sectional view on line 3 3 of Fig. 1, showing the valve in position to let exhaust-steam pass from exhaust-port e of the reversing-valve through exhaust-port f of the steam-chest. cc and dd are steam-ports of said valve for backward motion.

Fig. tisasectional View on line 4 4 of Fig. 1, showing the valve in position for forward motion. a is steam-port for said motion.

Fig. 5 is a sectional view on line 5 5 of Fig. 1, showing the valve in position for backward motion. (J and d are steam-ports of said valve for the backward motion.

steam-ports for forward motion. 0 00 G and d dd D are steam-ports for backward motion.

6 is the exhaust-port.

Similar letters refer to similar parts throughout the remaining views from Fig. 10 to Fig. 22.

Having thus fully described my invention, what 1 claim, and desire to secure by Letters Patent of the United States, is-

l. The combination of a reversing-valve, consisting of two parts, having one exhaustport and two steam-ports cut through the upper and lower parts, and two channels in the lower part, and two steam-ports cut through the upper part which acts in coincidence with two channels in the lower part of said valve substantially as set forth.

2. The combination of a reversing-valve, consisting of two parts having one exhaustport with chamfered grooves on both sides on top of the upper part and chamfered grooves on both sides on bottom of the lower part, and two steam-ports with chamfered grooves on both sides on top of the upper part and chamfered grooves on both sides of two steamports on bottom of the lower part, and having two steam-ports with a chamfered groove on one side on top of the upper part which acts in coincidence with the channels in the lower part and a .chamfered groove on one side of two steam-ports on bottom of the lower part which acts in coincidence with the steam-ports on the cylinder, substantially set forth. v

In testimony whereof I have signed my name to this specification in the presence of the two subscribing witnesses.

HENRY A. BOEDECKER, JR.

Witnesses:

J. A. JAoKsoN, J. W. KNOX, Jr. 

